Naslov
Spectroscopic calculations of the low-lying structure in exotic Os and W isotopes

Autori
Nomura, K. ; Otsuka, T. ; Rodríguez-Guzmán, R. ; Robledo, L. M. ; Sarriguren, P. ; Regan, P. H. ; Stevenson, P. D. ; Podolyák, Zs.

Izvornik
Physical Review C (0556-2813) 83 (2011), 5; 054303, 7

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Nuclear structure ; interacting boson model ; Gogny energy density functional

Sažetak
Structural evolution in neutron-rich Os and W isotopes is investigated in terms of the interacting boson model (IBM) Hamiltonian determined by (constrained) Hartree-Fock-Bogoliubov calculations with the Gogny-D1S energy density functional (EDF). The interaction strengths of the IBM Hamiltonian are produced by mapping the potential energy surface (PES) of the Gogny-EDF with quadrupole degrees of freedom onto the corresponding PES of the IBM system. We examine the prolate-to-oblate shape/phase transition which is predicted to take place in this region as a function of neutron number N within the considered Os and W isotopic chains. The onset of this transition is found to be more rapid compared to the neighboring Pt isotopes. The calculations also allow the prediction of spectroscopic variables (excited state energies and reduced transition probabilities) which are presented for the neutron-rich 192, 194, 196 W nuclei, for which there is only very limited experimental data available to date.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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